Paper-bag machine.



PATENTED MAY 5, 1903.

F. TYSON.

PAPER BAG MACHINE.

APPLIOATION FILED saw. as, 1901.

30 MODEL.

min

' No. 727,559. PATENTED MAY 5, 190a.

' F. TYSON.

PAPER BAG MACHINE.

APPLICATION FILED SEPT. 28, 1901.

N0 MODEL.

9 SHEETS-SHEET 2.

fi 1E PATENTED MAY 5, 1903;

r. TYSON- PAPER BAG MACHINE.

APPLICATION FILED SEPT. 28, 1901 9 sggms-snnm at J10 HGDEL.

PATENTED MAY 5, 1903.

I. TYSON. V PAPER BAG MACHINE.

APPLIOATION FILED SEPT. 28, 1901.

9 SHEETS-SHEET 4.

no MODEL;

No; 727,559. PATENTED MAY 5, 1903.- F. TYSON. PAPER BAG MACHINE.

APPLICATION FILED 311F128, 1901 SHEETS-SHEET 6.

H0 MODEL.

No. 727,559. PATBNTED MAY 5, 1903 F. TYSON.

PAPER BAG MACHINE.

APPLIOATION FILED SEPT. 28, 1901.

N0 MODEL. 9 SHEBTSSHBBT 6-.

PATENTED MAY 5, 1903.

F. TYSON. PAPER BAG MACHINE.

APPLICATION FILED SEPT. 28. 1901. so MODEL. 9 SHEETS-SHEET 7.

Wwm.

PATENTED' MAY 5,1903. F. TYSON.

PAPER BAG MACHINE.

APPLICATION FILED SEPT. 28, 1901.

I asnnms-snnnfa. 69

H0 MODEL. v

F a. View of part of the machine, illustrating in which the following is e. specification.

side-tuckingthe tube after the seine has been view. partly in section, of

Fig. 6 is PENIISYLVANIA J swee erie rireoii, or PHiLADELPHiA, re rrrsizilviin i is "so JAMES LOWDGN, or ABZLENE, 'l'lLXAS, ROBERT W. RUTH- PHILADELPHIA, PENNSYLVrlNlA, AND J GEN R. OKELL, Ol

harem-ed May 5. 1903;

clerics.

.L in. 7

MAGHliNlE.

EEPH OIFIGATIQN forming port of Electors Patent lilo. 727,5519, dated May 5, 1903.

Application filed September 28, 1901. fierial No. 76,880. (Ho model.)

T 015 whom it may concern:

Beitknoivn that I, FRANK TYSON, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Pepez E-ag Machines, of

My invention consists of certain improvements in the paper-begmachine forming the subject of my Patent No. 689,4.t1, dated Docerober 24-, 1901, the object of my present invention being to simplify the construction and improve the operation of the mechanism for forming the primary fold of the bng=bottom upon the paper tube.

In the accompanying drawings, Figure l is side elevation my improved mechanism for opened from thebeiloWs-folded condition and also illustrating in longitudinal section that portion of the machine whereby the completion of the primary fold is effected. Fig. 2 is a. plain view of the same. Fig. 3 is a side part of the mechanism for operating the side-tuokers. Fig. 4 is an enlarged plenview, of the tucking mechenisni. 5 is a. side View of the some. on View looking in the direction of the arrow, 5. Fig. 7 is a. transverse. section on the line a a, Fig. 3. Fig". 8 is c. perspective viewof one of the devices emeloyed in oompleting the primary fold. Fig. 9 is a. side elevation, on an enlarged scale, of the devices for completing the priuiztry fold. Fig. 10'is view of part of the mechanism. 11 on end VlBW, partly in section, of theinochenism shown in Fig. 9. Fig. 2 is e ion or top view of part of said mechanism. Fig. 13 o. trrinsverse'seotion of the some, and Fig. Ll e sectional plan view taken through the horizontal cen er of the expand ed Bebe after the side tucks have been formed thereon. Fig. 15 is a similar view taken after the side tucks end the sides of the tube have been bellows folded. Fig. 16 is a. transverse section on the line b b, Fig.15, but showingthe complete tube instead of onlytbe lower hell of it, its in said figure. 17 is n. longritudinel section on the lined (1, Fig. 16; and Fig. 18 is a top or p e :1 view of the body of the R0 tube after the upp *ply of thesam'e has been folded back over the body of thetube to produce the diamond fold of the bog-bottom. The present niutchine is similar to the former so fares r ing the bellows-sided tube and then expending said tube to squere'form and also as to the mechanism for making the final folds of the bog-bottom, the present; invention relatlug solely to the means employed for forming the primary fold oi the bag-hottom-that is to say, the usual diamond fold with opposite triangular tucks formed on the front or allvanoing end of a. bellows-folded tube. The expanded portion of the former, over which the tube is continuously drewrnis represented at 40, the side-flickers for pressing in the sides of the expanded tube and forming the first of. the folds for the bag-bottom being represented at 200 and said tuckers consistlog of swinging blades mounted upon vertical studs at the forward ends of lovers 201, which are pivoted upon studs 202 on a. slide 203, which is mounted in suitable guides 204- on a. crossbar 205,cecured to the fixedfreme 75, of the machine, so that said slide can travel longitudinally or in a direction parallel with the line or travel of-the bag-tub Each of the tucking-blades 200 is carried byat hub, Which has arms 206 and 207, the arm 206 being acted upon by it coiled spring 209, which tends to inaintniuIthe arm 207 constantly in contact with a pin 210 on thelever 201, the tuolring-blede 200 being then at right angles to the line of travel of the bagtube, but free to swing forwardly or in the direction indicated by the arrow, Fig. 4, if the tion of the bag-tube upon the sauieiesuoh as to cause such swinging movement. he-levers 201 are likewise acted upon by coiled springs 0 211, which tend to throw the forward ends of. the lovers inwardly or in the direction of the arrows, Fig. 41, except when arms 212 of said levers are in eugaginentwith the forkedhead 213 of a slide 214, which is mounted in. guides S I c J on the slide 205, so as to be movable longitw rds the mechanism for forn1- 55 vby the action of'the springs 211 upon the levers 201 be -thrust inwardly in front of the former 40, so as to tuck inwardly the sides of the bag-tube, the tucking-blades then traveling forward with the tube by reason of the longitudinal movement imparted to the slide 203. As they thus travel forward with the tube the tucking-blades are gradually withdrawn laterally by reason of the action of cams 215 upon antifriction-rollers carried by arms 216 of the levers 201, said camsbeing so formed that by the time the levers 201 reach the limit of their forward movement the tucking-blades 200 will be fully withdrawn and the arms 212 will be inposition to engage the locking-head 213 of the slide 214 when the same moves forwardly, the two slides 203 and 214 being then moved backwardiy together, so as to bring, the tucking-blades into position for further action.

The slide 203 is connected by a link 217 to a lever 219, which is acted upon by a cam 220 on the shaft 28 of the machine, and the slide 214 is likewise connected by a link 221 to a lever 222, which is acted upon by another earn 223 on said shaft 28, the cams 220 and 223 being so formed as to impart the desired intermittent reciprocating movements to the slides 2G3 and 214.

After the side tucks have been formed upon the tube by the action of the tucking-blades 200, as shown ate: in Fig. 14, said folded tucks are reduced to bellows form by the inwardpressing; action of fixed tucking-plates 224 upon the corners y of the tucks, this action taking place at the same time that the tube is being collapsed from the open to the bellows-folded condition again while moving forward after leaving the end of the expanded portion 40 of the former. The tube is then .in the condition shown in sectional plan at Fig. 15, in transverse section at Fig. 16-, and in longitudinal section at Fig.17, the bellows folding of the side tucks as resulting in the formation of triangular tucks 1010', one upon' the upper fold and the other upon the lower fold of each bellows-folded side of the tube.

If, then, the upper flap v of the thus pantially-formed bag-bottom is folded or drawn back onto the body of the tube, the upper triangular tuck in will likewise be folded back, and the forward end of the tube will, shown in Fig. 18, have formed upon it the diamond fold with internal triangular side tucks .5, usually resorted to as the preliminary step in the making of a square bottomed paper bag from a bellows-folded tube. In order to effect such drawing back of the upper ply or I When the arms flap '0 of the tube, I employ the mechanism shown in Figs. 8 to 13, on reference to which it will be observed that rolls and other parts corresponding to like parts of the original machine are correspondingly numbered, even though not specifically The uppermost of the pair'of feed-rolls 85, however, has a transverse groove, in which are free to slide a pair of fingers 225, each of which is carried by a sliding collar 226, splined upon the shaft of the upper feed-roll 85, so as to turn therewith, but so as to have movement from and toward the end of the same, the outward movement being effected by means of a coiled spring 227, interposed between the collar and the end of the feedreferred to herein.

roll, and the inward movement being dueto the action of a cam 229, which is secured to a plate 230, mounted on a cross-bar on the fixed frame, said cam acting upon an antifriction-roller 231 on the collar 226. Bearing upon the upper feed-roll some distance inwardly from each end of the same isa roller 232, which is carried by a spindle 233, adjustable by means of lock-nuts 234 and 235 in an arm 236, which is secured to a rock-shaft 237, mounted in brackets 239, projecting from the cross-barof the fixed frame, this rock-shaft also having another arm 240, which is acted upon by a coiled spring 241, tending to raise the, same, and thereby lift the rollers 232 out of contact with the feed-roller 8-5. Loosely mounted on the rock-shaft 237, however, is an arm 242, which has an antifriction-roller 243, acted upon by a cam 244 on a shaft 245, which is located above the shaft which carries the feed-roller 130 of the machine.

Between the arm 242 and a lug or projection 246 on the arm 240 is interposed acoiled spring 249, the tension of whichis determined by a nut 250, bearing upon the arm 242 and adapted to the threaded portion of a bolt 251, which projects upwardly from the lug 246. Hence when the antifriction-roller 243 of the arm 242 is acted upon by the cam 244 the arm 240 will be pressed downward with a force depending upon the tension of the spring 249, and like movement will thereby be imparted to the arms 236, carrying the rollers 232. Bearing upon the roller 130, which is'located in advance of the upper feed-roll 35, are a central roller 252 and two side rollers. 253, these rollers being carried by the shaft 245, which is adapted to bearings in' boxes 256, loosely confined by bolts 257 to the fixed frame of the machine and acted upon by springs 259, tending to depress them and hold them in contact with said fixed frame, whereby the shaft 245 and its rollers 252 and 253 can rise slightly to accommodate dilferent thicknesses of paper passing between the same and the roll 130.

The upper feed-roll 85 has a central groove 260, which at one point in the periphery of the roll is expanded laterally, soas to form a triangular recess or pocket 261, as shown in Fig. 12, the transversely-reciprocating fingers 225'being so located as to project into and part way across the forward end of the pocket.

The outer faces of'the fingers 225 are flush with the periphery of the upper roll 85, and said fingers are tapered at their inner ends, as shown in Fig. 12.- Hence when the paper tube, with the folds thereon due to the action of the side-tuckers 200 and tucking-plates 224, passes between the upper and lower rolls 19 there is a tendency of the upper flap n of the bag-blank to expand into the recess or pocket 261, so as to afford an opportunity for the fingers 225 toenter between the upper and lower flaps: Both flaps are still conneoted to the rear end of the preceding bagblank. Hence as the peripheries of the rollers and 130 diverge the lower flap will be carried forwardly over the roller 130, while the upper flap, caught by the fingers 225, will be drawn backwardly by the roll 85 and will be thereby torn away from thepreceding bag and folded baelnva-rdly under the yielding rollers 232, which press said backwardly-folded flap down upon the roll 85 as it is finally drawn forward by the advancing tube, the side portions of the diamond fold of the bag-bottom thereby produced receiving further pressure from the rolls as they pass between the same and the roll 130. v

By means of the apparatus described I divide the formation of the diamond fold of the bag-bottom into two-stages, the first being the formation of the side tucks and the bellows folding of the same due to the action of the side-tuckers 200 and blades 22-1, and the second being the opening up of the diamond told by the action of the feed-rolls and the tingers 225. Hence the machine can operate more rapidly than where an attempt is madeto form the diamond fold upon a bellows folded tube by a single operation. Moreover, the formation of said diamond fold is effected by instrumentalities which act upon the exterior of the paper tube, there being no mechanism for entering the forward end or mouth of the tube and distending the same by pressure from the inside, as in a number of previous machines of the class to which my invention relates. There is consequently no risk of tearing or otherwise damaging the paper, such as is likely to result from the action of said internal distending: devices, the operations which in my machine result in the formation of the diamond fold being inching or folding operations which do not at any time exert a strain upon the paper tube except at the point where it is severed from the preizeding blank.

Having thus described my invention, I claim and desire to secure by Letters Patentl. The combination in a paper-bag machine, of a formerfor guiding a paper tube, tuckers for folding in the sides of said tube, and fol lowing tuckers for imparting a bellows fold to said side-tueked portions of the tube, substantially as specified.

2. The combination in a paper-bag machine, of a former for guiding apaper tube, tuckers for folding in the sides of said tube, following tuckers for imparting a bellows fold to said side-tucked portions of the tube, and means for feeding the'tube continuously forward, substantially as specified.

3. The combination in a paper-bag machine, of a former for expanding a bellows-folded tube, tuckers for folding'in the sides of said expanded tube, and following, tuckers for imparting a bellows fold to said side-tucked portions of the tube, substantially as specified.

a. The combination in a paper-bag machine, of a former for expanding a bellows-folded tube, tuckers for folding in the sides of the said expanded tube, following tuckers for imparting a bellows fold to said side-tucked portions of the tube, and means for feeding the tube continuously forward, substantially as specified.

5. The combination in a papenbag machine, of a former for guidinga paper tube, tuckers for folding in the sides of said tube, following tuckers forimparting a bellows fold to said side-tuclced portions of the tube, and means for engaging one of the projecting flaps thereby produced, and folding it back upon the tube, substantially as specified.

6. The combination in a paper-ha machine, of a former for guiding a paper tu e, tucker-s for folding in the sides of said tube, following tnckers fior imparting a bellows fold to said side-tuc ed portions of the tube, means for engaging one of the projecting flaps thereby produced, and folding it back upon the tube, and means for feeding the tube continuously forward, substantially as specified.

7. The combination in a paper bag machine, of a tapering rectangular former having top and bottom which converge from the delivery portion of the former to a point in advance of the same whereby said former is adapted to expand a bellows-folded tube, tuckers for folding'in the sides of said expanded tube, following tuckers for bellows-folding said side tubks, and means for engaging one of. the flaps thereby formed and folding it back upon the tube, substantially as specified.

8. The combination in a paper-bag machine,

of a tapering rectangular former having top and bottom which converge from the delivery portion of the former to a point in advance of the same whereby said former is adaptedto expand a bellows-folded tube, tuckers for folding in the sides of said expanded tube, following tuckers for bellows-folding said side tucks, means for engaging one of the [laps thereby formed, and folding it back upon the tube, and means for feeding the tube continuously forward, substantially as specified.

9. The combination of the tube-feeding devices, the sideduckers, levers carrying the vices, the side-tuckers and their carriers, and

. leased from the action of the locking-head,

' verscly-reciprocated fingers carried by one of the tuckersout of engagement with the tube,

same,

4: I v'azste same, a reciprocated slide carrying saidlevers and moving parallel with the direction of travel of the tube,-"and means for swinging the levers so as to carry the tuckers into and out of'engagement with the sides of the tube, substantially as specified.

10. The combination of the tube-feeding devices, the side-tuckers, levers carrying the same, means for moving said levers parallel with the direction of travel of the tube, means for positively moving the levers so as to carry and springs acting upon the levers to cause the tuckers to engage with the tube, substantially as specified.

' 11. The combination of the tube-feedingdevices, the side-tuckers, levers carrying the same and movable parallel with the direction of movement of the tube, means for moving said levers so as to carry the tuckers out of engagement with the tube, and locking devices for holding said levers in such position, substantially as specified.

12. The combination of the tube-feeding devices, the side-tuckers, levers carrying the same, a slide upon which said levers are mounted, a second slide mounted'upon the first and having a locking-head for engaging said levers,and means for reciprocating said slides, substantially as specified.

13. The combination of the tube-feeding devices, the side-tuckers, carriers therefor having movement parallel with the direction of movement of the tube and also having movement from and toward the sides of said tube, and means foryieldingly mounting the tuckers on said carriers whereby they can swing forwardly or in the direction of movement of the tube, substantially as specified.

14:. The combination of the tube-feeding deplates for acting upon the portions of the tube folded by said tuckers and imparting a bellows fold thereto, substantially as specified.

15. The combination of the tube-feedingdevices, the side-tuckers, levers carrying the a slide upon which said levers are mounted, a second slide mounted on the first and having a locking-head for the levers, means for reciprocating said slides,cam s for acting upon the levers as they are carried forwardly so as to swing the tuckers outwardly, and springs acting upon the levers to move the tuckers inwardly when said levers are resubstantially as specified.

16. The combination in means for forming the diamond fold of a bag-bottom upon a tube, of tuckers for folding in the sides of a rectangular tube, means for imparting a bellows fold to said side-tucked portions of the tube, a pair of feed-rollers, and a pair of transsaid rollers and adapted to engage with one ed side tucks have been formed upon the tube and fold it back upon said tube, substantially as specified.

17. The combination in means for forming the diamond fold of a bag-bottom upon atnbe, of tuckers for folding in the sides of a rectangular tube, means for imparting a bellows fold to said side-tucked portions, a 'pair of feed-rollers, one of which is recessed for the reception of a portion of one of the plies of the tube, and transversely-reciprocating fingers carried by one of the rollers for entering between the plies in advance of the bellowsfolded side-tucked portions, substantially as specified.

18. The combination in means for forming the diamond fold of abag-bottom upon a-tube',

of tuckers for folding in the sides of a rectan-.

gular' tube, means for imparting a bellows fold to said sidetucked portions of the tube, a pair of feed-rollers, a pair of transverselyreciprocated fingers carried by one of said rollers and adapted to engage with one of the plies of the tube after the bellows-folded side tucks have been formed upon the tube and fold said ply backwardly upon said tube,

and yielding press-rolls for acting upon said back-folded ply of the tube, substantially as specified.

19. The combination in means for forming the diamond fold of a bag-bottom upon a tube, of tuckers for folding in the sides of a rectangular tube, means for imparting a bellows fold to said side-tucked portions of the tube,

a pair of feed-rolls, a pair of transversely-- reciprocatedfingers carried by one of said rolls, and serving tie-engage one of the plies ofthe' tube in advance of the bellows-folded side-tucked portions, and fold said ply back upon the tube, and yielding presser-rolls serving in connection with the other feedroll to carry the body of the tube forwardly and also to press down the side portionsof the diamond fold, substantially as specified.

20. The combination of the feed-roll, the

yielding presser-rolls operating in conjuncticn therewith, a rock-shaft having arms carrying said presser-rolls, another arm on said rock-shaft, a cam-actuated arm, and a spring interposed between said cam-actuated arm and the arm on the rock-shaft, whereby the action of the cam is transmitted to the pressrolls through the medium of said spring, substantially as specified.

21. The combination in means for forming the diamond fold of a bag-bottom upon a bellows-sided tube, of a pair of feed-rolls, one of which has opposite side portions serving in connection with the other roll to constantly,

grip and feed forward the paper tube, said roll having between these side portions a triangular recess into which one of the plies of the tube can expand,substantially as specified.

22. The combination in means for forming the diamond fold of a bag-bottom upon a bel-. lows-sided tube, of a pair of feed-rollers" one of which has transverse guide-grooves therein and a pair of transverse1y-reeiprocated fingers guided in said grooves, whereby they can engage one of the plies of a bellowsfolded tube passing between the rolls, sub- 5 stantiaily as specified.

23. The combination in means for forming the diamond fold of a bag-bottom upon a bellows-sided tube, of a pair of feed-rolls one of which has transverse guide-grooves therein 10 and a pair of transversely-reciprocated fingers mounted so as to be free to slide in said guide-grooves whereby they can engage one of the plies of a bellows-folded tube passing between the rolls, the inner ends of said transversely-reciproeated fingers being ta- 15' FRANK TYSON.

Witnesses:

FRANK E. BECHTOLD, Jos. H. KLEIN. 

